[erlang-questions] Decompiling Erlang source code

[Richard Carlsson]

The first argument to beam_lib:chunks/2 should be a path to the beam file,
not just the module name.


        /Richard

2017-10-30 13:38 GMT+01:00 Prakash Parmar <prakashkumar_parmar@REDACTED>:

> I have Erlang application's beam files which I want to decompile.
>
> Application is Compiled and build with 'debug_info' options. here is
> snippet of emake file to which is used to build application :
>
>     {"apps/my_app/src/*",   [debug_info, nowarn_export_all, {outdir,
> "apps/my_app/ebin"},{pa, "deps"},{parse_transform, lager_transform},
> {parse_transform, events_transform}]}.
>
> I have tried function from beam_lib module but getting following Error :
>
>     1>{ok,{_,[{abstract_code,{_,AC}}]}} = beam_lib:chunks(abc,[abstract_
> code]).
>     ** exception error: no match of right hand side value
> {error,beam_lib,{not_a_beam_file,'abc.beam'}}
>
> I have also tried solution mentioned in following post
> <https://reverseengineering.stackexchange.com/questions/8895/decompile-erlang-beam-files-compiled-without-debug-info>
> but Its not working for me. I'm getting following error :
>
>     1> file:write_file("/tmp/my_module_disasm", io_lib:fwrite("~p.\n",
> [beam_disasm:file(abc)])).
>     ok
>
> /tmp/my_module_disasm file contains :
>
>     {error,beam_lib,{not_a_beam_file,'abc.beam'}}.
>
> Anyone have Idea ?
>
>
>
>
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